Items with msgid. The original string is in a comment line with the word "Default:". The msgid is an abbreviation for the string, in the form "label_something". The first part or the msgid tells the type of the string, and gives you hints on where it is being used.

Items without msgid. The original string in in the msgid line.

Edit the msgstr line of each item to contain the translation of the original string.

Some strings will have placeholders, in the format of "${placeholder}". The word in curly braces must not be translated, but must stay the same. You may move the placeholders in your translation as you see fit. In LeMill the placeholders are always replaced with some dynamic content. The word in the placeholder tells you what is going to be inserted in its place.

(optional) Place the file into your local Zope's Products/LeMill?/i18n, restart Zope, and test the translation yourself

Send the translated file to Tarmo.Toikkanen@….

Later, there will be need for additional translations as new strings get added, so check back regularly (or: Tarmo will probably ask you every now and then) to download the translation file and translate any new or changed strings it contains, and send the results back.